Lesson 3	Creating a new Oracle service on Windows
Objective	Create a new Windows service for the COIN database

Creating new Oracle Service using the Oradim utility

On a Windows system, the Oracle background processes (DBW0, LGWR, etc) all run as one Windows service. Before you can start a new instance and execute the CREATE DATABASE statement that you just wrote, you must first create a new service for that instance. Oracle8 database provides a utility named ORADIM for this purpose. ORADIM is not Windows based, so you need to run it from the Windows command prompt. Move your mouse over the following diagram to learn about the syntax to use when you create a new instance:

ORADIM: Is the command, and is different for different releases of Oracle. In Oracle8i (8.1.5), the command is simply ORADIM. In Oracle 8.0.x, the command is ORADIM80.

Tells ORADIM that you are creating a new instance, as opposed to removing or modifying an existing one.

SID sid: Specifies the SID name for the new instance.

SRVC: Specifies the service name for the new instance. You must use either -SID or -SRVC, but not both. In this course we will use -SID

INTPWD: Specifies the internal password for the new instance. This is optional, and you don't need to do this now.

MAXUSERS integer: Reserves space for the specified number of database users.

STARTMODE auto manual: Controls whether or not the service starts automatically (a) when Windows NT boots. A value of “auto” results in an automatic startup, while a value of “manual” requires you to manually start the service.

PFILE filespec: Points to your database parameter file (the initialization file).

TIMEOUT: This is in seconds, and controls the amount of time that is allowed to pass before ORADIM gives up on trying to create the service.

Creating Oracle Instance

Creating an instance — ORADIM - NEW (-SID sid | -SRVC service)
Using the ORADIM command

ORADIM: Is the command, and is different for different releases of Oracle. In Oracle8i (8.1.5), the command is simply ORADIM. In Oracle 8.0.x, the command is ORADIM80.
-NEW: Tells ORADIM that you are creating a new instance, as opposed to removing or modifying an existing one.
-SID sid: Specifies the SID name for the new instance.
-SRVC: Specifies the service name for the new instance. You must use either -SID or -SRVC, but not both. In this course we will use -SID.
-INTPWD: Specifies the internal password for the new instance. This is optional, and you do not need to do this now.

-MAXUSERS integer: Reserves space for the specified number of database users.
- STARTMODE auto|manual: Controls whether or not the service starts automatically (a) when Windows NT boots. A value of “auto” results in an automatic startup, while a value of “manual” requires you to manually start the service.
-PFILE filespec: Points to your database parameter file (the initialization file).
-TIMEOUT: This is in seconds, and controls the amount of time that is allowed to pass before ORADIM gives up on trying to create the service.

Using ORADIM to Administer an Oracle Database Instance

ORADIM is a command-line tool that is available with Oracle Database. You are required to use ORADIM only if you are manually creating, deleting, or modifying databases. Database Configuration Assistant is an easier tool to use for this purpose. The following sections describe ORADIM commands and parameters. Note that each command is preceded by a dash (-). To get a list of ORADIM parameters, enter:

oradim -? | -h | -help

Note: Specifying oradim without any options also returns a list of ORADIM parameters and descriptions. When you use ORADIM, a log file called oradim.log opens in

ORACLE_HOME\database,

or in the directory specified by registry parameter ORA_CWD. All operations, whether successful or failed, are logged in this file. You must check this file to verify success of an operation.

If you have installed an Oracle Database service on Windows, then when logging in as SYSTEM user (LocalSystem), with startup mode set to Automatic, it is possible that the Oracle Database service starts but the database does not start automatically. The following error message is written to file ORADIM.LOG in directory ORACLE_HOME\database:

ORA-12640: Authentication adapter initialization failed

Oracle Enterprise Management Agent, Oracle Enterprise Manager Management Server and Oracle Internet Directory may also fail, because they cannot connect to the database for the same reason. The workarounds are:

Modify SQLNET.ORA
You can modify SQLNET.ORA, either by removing the line
```
sqlnet.authentication_services=(NTS)
```
or by changing it to
```
sqlnet.authentication_services=(NONE)
```
Start the database after the service starts
You can start the database manually after the Oracle Database service has started, using SQL*Plus and connecting as SYSDBA.
Start the service as a specific user

Services control panel

In this lesson's exercise, you will create the instance for your new database. After completing the exercise, you will open up the Services control panel to look at your new service. In case you arenot familiar with the Services control panel, the following simulation shows you how to open it, and how to find the services related to Oracle8.

find Oracle Services

Create Oracle Service - Exercise

Now, go on to the exercise to create a service for your database, and open the services control panel on your own.
Create Oracle Service - Exercise